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center box: support height-for-width
Implement request modes fully.
This commit is contained in:
Matthias Clasen
parent
42921750ff
commit
141e053e87
@ -49,6 +49,7 @@
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#include "gtkorientable.h"
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#include "gtkorientableprivate.h"
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#include "gtkbuildable.h"
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#include "gtksizerequest.h"
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struct _GtkCenterBox
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{
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@ -95,13 +96,119 @@ gtk_center_box_buildable_init (GtkBuildableIface *iface)
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}
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static void
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gtk_center_box_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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gtk_center_box_distribute (GtkCenterBox *self,
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gint for_size,
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gint size,
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GtkRequestedSize *sizes)
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{
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int center_size = 0;
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int start_size = 0;
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int end_size = 0;
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gboolean center_expand = FALSE;
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gboolean start_expand = FALSE;
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gboolean end_expand = FALSE;
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int avail;
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sizes[0].minimum_size = sizes[0].natural_size = 0;
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sizes[1].minimum_size = sizes[1].natural_size = 0;
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sizes[2].minimum_size = sizes[2].natural_size = 0;
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if (self->start_widget)
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gtk_widget_measure (self->start_widget,
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GTK_ORIENTATION_HORIZONTAL,
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for_size,
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&sizes[0].minimum_size, &sizes[0].natural_size,
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NULL, NULL);
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if (self->center_widget)
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gtk_widget_measure (self->center_widget,
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GTK_ORIENTATION_HORIZONTAL,
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for_size,
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&sizes[1].minimum_size, &sizes[1].natural_size,
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NULL, NULL);
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if (self->end_widget)
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gtk_widget_measure (self->end_widget,
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GTK_ORIENTATION_HORIZONTAL,
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for_size,
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&sizes[2].minimum_size, &sizes[2].natural_size,
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NULL, NULL);
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if (self->center_widget)
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{
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center_size = CLAMP (size - (sizes[0].minimum_size + sizes[2].minimum_size), sizes[1].minimum_size, sizes[1].natural_size);
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center_expand = gtk_widget_get_hexpand (self->center_widget);
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}
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if (self->start_widget)
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{
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avail = MIN ((size - center_size) / 2, size - (center_size + sizes[2].minimum_size));
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start_size = CLAMP (avail, sizes[0].minimum_size, sizes[0].natural_size);
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start_expand = gtk_widget_get_hexpand (self->start_widget);
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}
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if (self->end_widget)
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{
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avail = MIN ((size - center_size) / 2, size - (center_size + sizes[0].minimum_size));
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end_size = CLAMP (avail, sizes[2].minimum_size, sizes[2].natural_size);
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end_expand = gtk_widget_get_hexpand (self->end_widget);
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}
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if (self->center_widget)
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{
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int center_pos;
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center_pos = (size / 2) - (center_size / 2);
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/* Push in from start/end */
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if (start_size > center_pos)
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center_pos = start_size;
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else if (size - end_size < center_pos + center_size)
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center_pos = size - center_size - end_size;
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else if (center_expand)
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{
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center_size = size - 2 * MAX (start_size, end_size);
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center_pos = (size / 2) - (center_size / 2);
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}
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if (start_expand)
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start_size = center_pos;
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if (end_expand)
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end_size = size - center_pos + center_size;
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}
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else
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{
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avail = size - (start_size + end_size);
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if (start_expand && end_expand)
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{
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start_size += avail / 2;
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end_size += avail / 2;
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}
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else if (start_expand)
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{
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start_size += avail;
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}
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else if (end_expand)
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{
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end_size += avail;
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}
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}
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sizes[0].minimum_size = start_size;
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sizes[1].minimum_size = center_size;
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sizes[2].minimum_size = end_size;
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}
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static void
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gtk_center_box_measure_orientation (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkCenterBox *self = GTK_CENTER_BOX (widget);
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int min_baseline, nat_baseline;
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@ -133,16 +240,70 @@ gtk_center_box_measure (GtkWidget *widget,
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&end_min, &end_nat,
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&min_baseline, &nat_baseline);
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*minimum = start_min + center_min + end_min;
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*natural = center_nat + 2 * MAX (start_nat, end_nat);
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}
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static void
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gtk_center_box_measure_opposite (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkCenterBox *self = GTK_CENTER_BOX (widget);
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int min_baseline, nat_baseline;
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int start_min = 0;
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int start_nat = 0;
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int center_min = 0;
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int center_nat = 0;
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int end_min = 0;
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int end_nat = 0;
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GtkRequestedSize sizes[3];
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if (for_size >= 0)
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gtk_center_box_distribute (self, -1, for_size, sizes);
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if (self->start_widget)
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gtk_widget_measure (self->start_widget,
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orientation,
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for_size >= 0 ? sizes[0].minimum_size : -1,
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&start_min, &start_nat,
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&min_baseline, &nat_baseline);
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if (self->center_widget)
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gtk_widget_measure (self->center_widget,
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orientation,
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for_size >= 0 ? sizes[1].minimum_size : -1,
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¢er_min, ¢er_nat,
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&min_baseline, &nat_baseline);
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if (self->end_widget)
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gtk_widget_measure (self->end_widget,
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orientation,
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for_size >= 0 ? sizes[2].minimum_size : -1,
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&end_min, &end_nat,
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&min_baseline, &nat_baseline);
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*minimum = MAX (start_min, MAX (center_min, end_min));
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*natural = MAX (start_nat, MAX (center_nat, end_nat));
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}
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static void
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gtk_center_box_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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if (orientation == GTK_ORIENTATION_HORIZONTAL)
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{
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*minimum = start_min + center_min + end_min;
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*natural = center_nat + 2 * MAX (start_nat, end_nat);
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}
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else /* GTK_ORIENTATION_VERTICAL */
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{
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*minimum = MAX (start_min, MAX (center_min, end_min));
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*natural = MAX (start_nat, MAX (center_nat, end_nat));
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}
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gtk_center_box_measure_orientation (widget, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline);
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else
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gtk_center_box_measure_opposite (widget, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline);
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}
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static void
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@ -156,65 +317,26 @@ gtk_center_box_size_allocate (GtkWidget *widget,
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GtkWidget *left;
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GtkWidget *right;
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int left_size = 0;
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int left_min = 0;
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int left_nat = 0;
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int center_size = 0;
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int center_min = 0;
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int center_nat = 0;
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int right_size = 0;
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int right_min = 0;
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int right_nat = 0;
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int avail;
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gboolean left_expand = FALSE;
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gboolean center_expand = FALSE;
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gboolean right_expand = FALSE;
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GtkRequestedSize sizes[3];
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GTK_WIDGET_CLASS (gtk_center_box_parent_class)->size_allocate (widget, allocation);
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gtk_center_box_distribute (self, allocation->height, allocation->width, sizes);
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if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
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{
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left = self->start_widget;
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left_size = sizes[0].minimum_size;
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right = self->end_widget;
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right_size = sizes[2].minimum_size;
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}
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else
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{
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right = self->start_widget;
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right_size = sizes[0].minimum_size;
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left = self->end_widget;
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}
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GTK_WIDGET_CLASS (gtk_center_box_parent_class)->size_allocate (widget, allocation);
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if (left)
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gtk_widget_measure (left, GTK_ORIENTATION_HORIZONTAL,
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allocation->height,
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&left_min, &left_nat, NULL, NULL);
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if (right)
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gtk_widget_measure (right, GTK_ORIENTATION_HORIZONTAL,
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allocation->height,
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&right_min, &right_nat, NULL, NULL);
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if (self->center_widget)
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gtk_widget_measure (self->center_widget, GTK_ORIENTATION_HORIZONTAL,
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allocation->height,
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¢er_min, ¢er_nat, NULL, NULL);
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if (self->center_widget)
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{
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center_size = CLAMP (allocation->width - (left_min + right_min), center_min, center_nat);
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center_expand = gtk_widget_get_hexpand (self->center_widget);
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}
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if (left)
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{
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avail = MIN ((allocation->width - center_size) / 2, allocation->width - (center_size + right_min));
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left_size = CLAMP (avail, left_min, left_nat);
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left_expand = gtk_widget_get_hexpand (left);
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}
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if (right)
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{
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avail = MIN ((allocation->width - center_size) / 2, allocation->width - (center_size + left_min));
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right_size = CLAMP (avail, right_min, right_nat);
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right_expand = gtk_widget_get_hexpand (right);
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left_size = sizes[2].minimum_size;
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}
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child_allocation.y = allocation->y;
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@ -222,7 +344,7 @@ gtk_center_box_size_allocate (GtkWidget *widget,
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if (self->center_widget)
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{
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child_allocation.width = center_size;
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child_allocation.width = sizes[1].minimum_size;
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child_allocation.x = (allocation->width / 2) - (child_allocation.width / 2);
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/* Push in from start/end */
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@ -230,39 +352,11 @@ gtk_center_box_size_allocate (GtkWidget *widget,
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child_allocation.x = left_size;
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else if (allocation->width - right_size < child_allocation.x + child_allocation.width)
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child_allocation.x = allocation->width - child_allocation.width - right_size;
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else if (center_expand)
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{
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child_allocation.width = allocation->width - 2 * MAX (left_size, right_size);
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child_allocation.x = (allocation->width / 2) - (child_allocation.width / 2);
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}
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child_allocation.x += allocation->x;
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gtk_widget_size_allocate (self->center_widget, &child_allocation);
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gtk_widget_get_clip (self->center_widget, &child_clip);
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gdk_rectangle_union (&clip, &clip, &child_clip);
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if (left_expand)
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left_size = child_allocation.x - allocation->x;
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if (right_expand)
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right_size = allocation->x + allocation->width - (child_allocation.x + child_allocation.width);
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}
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else
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{
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avail = allocation->width - (left_size + right_size);
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if (left_expand && right_expand)
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{
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left_size += avail / 2;
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right_size += avail / 2;
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}
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else if (left_expand)
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{
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left_size += avail;
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}
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else if (right_expand)
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{
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right_size += avail;
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}
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}
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if (left)
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@ -335,6 +429,30 @@ gtk_center_box_direction_changed (GtkWidget *widget,
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update_css_node_order (GTK_CENTER_BOX (widget));
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}
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static GtkSizeRequestMode
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gtk_center_box_get_request_mode (GtkWidget *widget)
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{
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GtkCenterBox *self = GTK_CENTER_BOX (widget);
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gint count[3] = { 0, 0, 0 };
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if (self->start_widget)
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count[gtk_widget_get_request_mode (self->start_widget)]++;
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if (self->center_widget)
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count[gtk_widget_get_request_mode (self->center_widget)]++;
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if (self->end_widget)
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count[gtk_widget_get_request_mode (self->end_widget)]++;
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if (!count[GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH] &&
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!count[GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT])
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return GTK_SIZE_REQUEST_CONSTANT_SIZE;
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else
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return count[GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT] > count[GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH]
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? GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT
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: GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
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}
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static void
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gtk_center_box_class_init (GtkCenterBoxClass *klass)
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{
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@ -344,6 +462,7 @@ gtk_center_box_class_init (GtkCenterBoxClass *klass)
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widget_class->size_allocate = gtk_center_box_size_allocate;
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widget_class->snapshot = gtk_center_box_snapshot;
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widget_class->direction_changed = gtk_center_box_direction_changed;
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widget_class->get_request_mode = gtk_center_box_get_request_mode;
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gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_FILLER);
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gtk_widget_class_set_css_name (widget_class, "box");
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